X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [67.8.183.219] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.9) with HTTP id 1123801 for lml@lancaironline.net; Mon, 22 May 2006 17:10:05 -0400 From: "Marvin Kaye" Subject: Re: Jeffco Epoxy Turning Reddish To: lml X-Mailer: CommuniGate Pro WebUser v5.0.9 Date: Mon, 22 May 2006 17:10:05 -0400 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "richard titsworth" : I've noticed my Jeffco Epoxy #3156 (fast) has seemed to turned more red'ish when dispensed from the pump. Is this a problem? What causes the change? The pump is in a wooden box that has a normal 60 watt light bulb in it attached to thermostat that is set to 75*. I have a digital thermometer in the box and have noted that the temp typically varies between 70 and 85*. The light/thermostat is only on when I am in the shop/garage - it is attached to the light switch. The garage is heated and kept at approx 70* unless the garage door is open for fresh air (it's been in the 50's here in Mich and I turn the heat down when the door is open). Rick [The hardener is reacting with the check valve in the bottom of the bucket. The engineers at Jefco have assured us time and again that the discoloration has no effect on the intended chemical reaction between the resin and hardener and that the cured material has the same physical properties as a mixture done with uncolored hardener. It is my understanding that Michael Engineering has come up with a new check valve made from a different material, one that doesn't cause the color change. Look back in the LML archive a couple of days, you'll find Michael Engineering's phone number... this new component was just discussed in the past week. ]